Automatic feed-regulator for gas-burners



(No Model.)

0.. D. HARRIS.

AUTOMATIC FEED REGULATOR FOR GAS BURNERS.

No. 393,008.;v Patented Nov. 20,1888.

01/ c if Z I W I W 77 A l i -U i aw N, PETERS. PhnlO-Uflwgrapher.Wuhingion, D- C.

NITED STATES CHARLES D. HARRIS, OF GIOERO, INDIANA.

AUTOMATIC FEED-REGULATOR FOR GAS-BURNERS.

SPECIFICATION forming part of Letters Patent No. 393,008, dated November20, 1888.

(No model.)

To all whom it may concern:

Be it known that 1, CHARLES D. HARRIS, a citizen of the United States,residing at Cicero, in the county of Hamilton and State 'of Indiana,have invented a new and useful Improvement in Automatic Feed-Valves, ofwhich the following is a specification.

My invention relates to an improvement in automatic feed-regulatingvalves for gas-burners; and it consists in the peculiar construction andcombination of devices, that will be more fully set forth hereinafter,and particularly pointed out in the claims.

The object of my invention is to provide a feed-regulator for agas-burner which is adapted to be operated automatically by changes oftemperature, so as to preserve an even temperature in the room orapartment in which the gas-heater is located.

In the drawings, Figure 1 is partly a side elevation and partly avertical sectional view of a feed-regulator embodying my improvements.Fig. 2 is a vertical sectional view of the same taken on the line we ofFig. 1. Fig. 3 is a top plan view thereof.

A represents the base plate, which is provided on its upper side with aboss, B. In the upper end of the said boss is a circular recess ordepression, 0, and communicating with the center of said recess ordepression is an opening, D, which communicates with the gaspipe E.

F represents an escape-opening, which is also made in the baseplate andcommunicates with the recess 0 near the opening D, and in the saidopeningF is secured one end of a pipe,

(1%, which supplies gas to the heating-burner,

(not shown,) said burner being arranged in a suitable grate, fire-box,stove, or other receptacle.

From the foregoing it will be understood that the gas must pass from theopening D through the recess 0 and into the opening F before it canreach the burner.

II represents a metallic diaphragm, which is arranged on the upper sideof the boss so as to cover the recess 0, and is secured firmly on theboss by a circular plate, I, which is screwed to the boss and has acentral circular opening of suitable size to expose the major portion ofthe diaphragm.

K represents a curved spring-arm, which has one end bearing on thecenter ofthe diaphragm. A screw, L, passes downward through the arm K,near the outer end thereof, and enters the plate A, and another screw,M, passes upward through said plate and bears against the under side ofthe outer end of the arm at a suitable distance beyond the screw L. Byturning said screws L and M the spring-arm may be caused to bear uponits diaphragm at any desired pressure, so as to keep the same normallyclosed over the openings D F, as will be readily understood.

To the ends of the plate A are secured standards or posts N, whichextend upward therefrom. A beam, 0, is provided with vertical openingsnear its ends, through which the posts extend, and said beam is arrangedat a suitable distanceabove the plate A, and is provided with transversediagonal grooves P in its under side, and has a vertical opening, R,which is arranged above the diaphragm. Bolt rods S extend upward fromthe plate A through the beam 0, and have clamping-nuts T at their upperends, which bear upon the said beam.

U represents a beam which connects the upper ends of the post N, and isprovided in its upper side with transverse oblique grooves V, whichextend in the opposite direction from the grooves P.

1, 3, 5, and 7 represent a series of yoke-1evers, which are provided atgradually-varying distances from one end with trunnions X, which arewedge-shaped in transverse section and have feathenedges at their lowersides, which bear in recesses Y in the upper side of the beam andcommunicate with the grooves. In the ends of the said yokelevers areopen slots Z. 2, 4, and 6 represent a series of similar yoke-levers,which are arranged in the grooves I of the beam 0, and have similarfeather-edge trunnions arranged at bearing distances from their ends andbearing in recesses in the under side of said beam.

B represents a rod, which is made of zinc, brass, or some. other metalwhich is adapted to contract and expand to a maximum extent undervarying temperatures. The lower end of said rod is secured firmly inbeam 0, and the upper end of said rod is threaded and passed through acentral opening in a saddle, O. Said saddle is triangular inerosssection and of a length somewhat in excess of the width of theyoke-levers, and the lower'feather-edge of said saddle is inserted in atransverse recess in the upper side of the yoke-lever, near one end ofsaid yoke. The upper end of said rod B is arranged in the open slot atthe end of the lever, and provided with a clampingnut, D, that bears onthe saddle. The opposite end of the yoke 1 is connected to one end ofyoke-lever 2 by a rod, E, and a pair of similar saddles, which engagethe upper and lower sides of said yoke-levers, respectively. A rod, Eand similar saddles connect the levers 2 and 3. A rod, E and similarsaddles connect the levers 3 and 4:. A rod, E and similar saddlesconnect the levers 4 and 5. A rod, E and similar saddles connect thelevers 5 and 6. A rod, E, and similar saddles connect the le vers 6 and7, and to one end of the lever 7 is similarly connected a similar rod,F, which passes downward through the opening R and has its lower endconnected to the free end of the spring-arm K. By this arrangement ofthe thermostatic rods and the yoke-levers said thermostatic rods arecaused to contract and expand throughout their combined lengths, andthus cause therod F, which is attached to the spring-arm, to move to amaximum ex- .tent in a vertical direction.

The operation of my invention is as follows: When theheat in the room orapartment exceeds the required degree, the thermostatic rods expand, soas to permit the arm K to exert greater pressure on the diaphragm, andthereby cause the same to partly cut off the supply of gas to the burnerby closing more tightly on the openings D and F. When the temperaturebecomes lowercd,the thermostatic rods contract, and thereby cause thearm K to move upward from the diaphragm, so as to cause the latter topermit an increased quantity of gas to be supplied to the burner,as willbe readily understood. The bolt-rods S contractand expand with thethermostatic rods, and thereby move the beam 0 very slightly on theposts N, and consequently aid the operation of the thermostatic rods.Said posts N are. preferably made of some material which will contractand expand only to the minimum extent.

In order to prevent the supply of gas from being entirely out off fromthe burner when the diaphragm closes on the openings D F, I

provide a needle-pointed valve, H, which is adapted to control a smallehanne1,H between the openings D F, and to cause a small quantity of gasto be fed to the burner continuously, independently of that fed theretoby the diaphragm. The quantity of gas fed by the said needle-pointedvalve may be controlled by adjusting the said valve, as will be readilyunderstood.

Having thus described my invention, I claim- 1. The combination of theplate A, having openings D F, the channel 0, connecting said openings,through which the gas passes, the diaphragm secured on said plate andadapted to regulate the size of the gas-channel, the arm bearing on thediaphragm to normally close the same on the gas-channel, and thethermostatic rod connected to the said arm to operate the latter,substantially as de scribed.

2. The combination, in a thermostatic gasfeed regulator, of thediaphragm, the springarm K, having one end bearing thereon, the screwsto regulate the pressure of said springarm on the said diaphragm, andthe thermostatic rod connected to said arm, substantially as described.

3. The combination of the beams or supports, the series of yoke-levershaving the fulcrums at varying distances from their ends and bearing onthe supports, the thermostatic rod 13, connecting one end of one of thesaid levers to a rigid support, the intermediate thermostatic rodsconnecting the ends of the levers together in continuous series, the rodE, attached to one of said levers at its free end, andthe'gas-regulating valve connected to said rod, substantially asdescribed.

4. The combination of the base-plate having the gas-channel and thediaphragm to regulate the size thereof, the posts N, extending from thebase-plate, the beam U, connecting the upper ends of said posts, thebeam 0, adapted to move on the post, the bolt-rods S, connecting saidbeam to the base-plate, the yoke-levers having their fulcrums on thebeams U 0, and the thermostatic rods connecting the said levers inseries, one of said rods being attached to the diaphragm ,substautiallyas described.

5. The gas-regulating valve having the channel through which the gaspasses, the diaphragm to regulate the size of said channel, thethermostat to automatically operate said diaphragm, and the valve,substantially as set forth, to feed gas independently of the gaschannel,substantially as described.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

' CHARLES D. HARRIS.

Witnesses:

T. M. WARFORD, W. H. FERISS.

IIO

